/* Copyright (c) 2020 XEPIC Corporation Limited */
#ifndef IVL_vhdlreal_h
#define IVL_vhdlreal_h
/*
 * Copyright (c) 2011-2014 Stephen Williams (steve@icarus.com)
 *
 *    This source code is free software; you can redistribute it
 *    and/or modify it in source code form under the terms of the GNU
 *    General Public License as published by the Free Software
 *    Foundation; either version 2 of the License, or (at your option)
 *    any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 * USA.
 */

#include <cmath>
#include <iostream>

/*
 * This class holds a floating point decimal number. The number is
 * stored as double. All based numbers are converted by an external
 * function to a double and then stored as class instance.
 */
class vhdlreal {
 public:
  friend std::ostream& operator<<(std::ostream&, const vhdlreal&);
  friend vhdlreal operator+(const vhdlreal&, const vhdlreal&);
  friend vhdlreal operator-(const vhdlreal&, const vhdlreal&);
  friend vhdlreal operator*(const vhdlreal&, const vhdlreal&);
  friend vhdlreal operator/(const vhdlreal&, const vhdlreal&);
  friend vhdlreal operator%(const vhdlreal&, const vhdlreal&);
  friend vhdlreal pow(const vhdlreal&, const vhdlreal&);
  // Unary minus.
  friend vhdlreal operator-(const vhdlreal&);

  explicit vhdlreal();
  explicit vhdlreal(const char* text);
  explicit vhdlreal(const double& val);
  vhdlreal(const vhdlreal& val);
  virtual ~vhdlreal(){};

  double as_double() const { return value_; }

 private:
  double value_;
};

#endif /* IVL_vhdlreal_h */
